1. In the first round, six people will draw lots, and two people will compete, and three winners will enter the next round. In the second round, three people play round robin, and the one with the most points wins. * * * Play six games.
2. In the first round, six people drew lots and divided into two groups. In the group round robin, the two with the lowest points will be eliminated. Four people enter the next round. In the second round, two sets were drawn, and the winner entered the final. The winner was decided in the final. * * * 9 games.
3. Six people play single loop, *** 15 games.